2001-2016年毛乌素沙地植被的生长状况

曹艳萍; 庞营军; 贾晓红

doi:10.13961/j.cnki.stbctb.2019.02.005

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2001-2016年毛乌素沙地植被的生长状况

试验研究

- 2001-2016年毛乌素沙地植被的生长状况
- Vegetation Growth in Mu Us Sandy Land from 2001 to 2016
- 水土保持通报 2019年39卷第2期页码：29-37
- 作者机构：
  
  1. 河南大学环境与规划学院,河南,开封,475004
  2. 黄河中下游数字地理技术教育部重点实验室,河南,开封,475004
  3. 中国林业科学研究院荒漠化研究所,北京,100091
- 作者简介：
- 基金信息：
  
  国家重点研发计划课题“京津冀风沙源区土地沙化形成机制与生态修复机理”（2016YFC0500801）;国家自然科学基金项目（4170101,1701503）
- DOI：10.13961/j.cnki.stbctb.2019.02.005
  中图分类号： Q948;TP79
- 纸质出版：2019
- 稿件说明：
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曹艳萍, 庞营军, 贾晓红. 2001-2016年毛乌素沙地植被的生长状况[J]. 水土保持通报, 2019,39(2):29-37.

Cao Yanping, Pang Yingjun, Jia Xiaohong. Vegetation Growth in Mu Us Sandy Land from 2001 to 2016[J]. Bulletin of Soiland Water Conservation, 2019, 39(2): 29-37.
曹艳萍, 庞营军, 贾晓红. 2001-2016年毛乌素沙地植被的生长状况[J]. 水土保持通报, 2019,39(2):29-37. DOI： 10.13961/j.cnki.stbctb.2019.02.005.

Cao Yanping, Pang Yingjun, Jia Xiaohong. Vegetation Growth in Mu Us Sandy Land from 2001 to 2016[J]. Bulletin of Soiland Water Conservation, 2019, 39(2): 29-37. DOI： 10.13961/j.cnki.stbctb.2019.02.005.

摘要

[目的]对2001-2016年毛乌素沙地植被生长状况进行研究，为该区域生态系统的可持续发展提供理论支持。[方法]基于MODIS EVI植被指数分析2001-2016年毛乌素沙地生长季和非生长季的植被生长状况，并讨论植被生长与气候变化、人类活动的关系。[结果]①毛乌素沙地植被覆盖度偏低，南部植被覆盖度明显高于北部区域。②毛乌素沙地2001-2016年植被覆盖度好转趋势明显。③生长季，毛乌素沙地南部和东部地区植被覆盖度变化速率大于中部和北部地区；且南部和东部的植被覆盖度部分呈显著增加，部分呈显著减小趋势。非生长季，南部地区植被覆盖度以显著增加为主。④毛乌素沙地EVI年最大值与降水呈正相关，与气温呈弱负相关；EVI年最小值与降水呈强正相关，与气温呈弱正相关。⑤农作物种植面积的增加、大规模人工造林以及大牲畜规模的控制等人类活动有助于植被覆盖度的提高。[结论]受气候因素和人类活动影响，21世纪以来毛乌素沙地植被生长状况好转。

Abstract

[Objective] In order to provide theoretical support for the sustainable development of ecosystems in the Mu Us sandy land

the research on the vegetation growth status in this region from 2001 to 2016 was carried out.[Methods] Based on MODIS EVI vegetation index

we analyzed the vegetation growth status of the growth season and non-growth season in Mu Us sandy land during 2001-2016. The relationship between vegetation and climate change

human activities was discussed.[Results] ① Vegetation coverage in Mu Us sandy land was relatively low. The vegetation coverage in the southern area was significantly higher than that in the northern region. ② The vegetation coverage in Mu Us sandy land showed an obvious improvement during 2001-2016. ③ In the growing season

the rate of vegetation coverage change in the southern and eastern regions was higher than that in the central and northern regions. Vegetation coverage in the southern and eastern region displayed a significant increase

and some showed a significant decrease. In the non-growth season

vegetation coverage in the southern region was mainly increased. ④ The annual maximum value of EVI in Mu Us sandy land was positively correlated with precipitation and weakly negatively correlated with temperature. The annual minimum value of EVI was strongly positively correlated with precipitation

and weakly positively correlated with temperature. ⑤ Human activities such as the increase of crop acreage

large-scale afforestation projects

and the control of large livestock numbers all contribute to the improvement of vegetation coverage.[Conclusion] Due to climatic factors and human activities

the vegetation growth of Mu Us sandy land had improved since the 21st century.

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